Blower or pump.



P. J. MINER;

BLOWER 0R PUMP.

APPLICATION rum) MAY 2, 190.8.

940,984. Patented Nov. 23, 1909. v 2 SHEETS-BEBE? 1.-

' fill W 1" In I I 1 l CD \"Jl I? m m w llfllfi'i 7 1 l ll I B 1 5 flu Hr I wnh hl m WITNESSES: 1 IN VENTOR aQhAim/w AAAAAAAAAAAAAAAAAAAAAAAAAAmounvuans, wAsmNGToN, n c.

" WITNESSES:

F; J. MINER.

BLOWER 0R PUMP.

APPLICATION FILED'MAY 2, 1908.

Patented N0v.23, 1909.

2 SHEETS-SHEET 2.

INVENTOR ATTORNEYS mmzzw. B. GRAHAM e04. PflOfO-LHGDGRAPHER3- wlsmusrou,n. c.

UNITED STATES PATENT OFFICE.

FRANK J. MINER, OF DETROIT, MICHIGAN, ASSIGNOR 'IO MINER ENGINEERINGCOM- PANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

BLOWER OR PUMP.

To all whom it may concern:

Be it known that I, FRANK J. MINER, a citizen of the United States ofAmerica, residing at Detroit, in the county of WVayne and State ofMichigan, have invented certain new and useful Improvements in Blowersor Pumps, of which the following is a specification, reference being hadtherein to the accompanying drawings.

The invention relates to blowers 0r pumps, and has more particularreference to the means employed for securing positive action.

The invention consists in the construction wherein the propeller bladesare moved differentially to alternately expand and contract the fiuidcontaining pockets therebetween; further in the means employed forproducing this differential action, and further in the peculiarconstruction, arrangement, and combination of parts as more fullyhereinafter set forth, and pointed out in the appended claims.

In the drawings, Figure 1 is a view in elevation of a. blower embodyingfeatures of the invention. Fig. 2 is a View in vertical central sectionof the blower. Fig. 3 is a view in side elevation of the blower withcasing removed. Fig. 4 is a view in longitudinal section of the blowerwith parts removed.

Generally described, my improved construction comprises a suitablecasing having inlet and outlet ports, a rotating series of blades withinthe casing arranged to form therebetween fluid pockets, together withmeans for moving the blades of the series differentially whereby saidpockets are eX- panded while in communication with the inlet port andare contracted while in com munication with the outlet port. In thepreferred form the blades are carried by a sprocket chain which engagesa pair of sprockets within the casing, the specific construction beingas follows:

Referring to the drawings, 1 indicates a main shaft journaled inbearings 2 of a casing 3 and provided with a belt wheel 4 forapplication of power. A follower shaft 5 is journaled in the casingparallel to the main shaft and is driven therefrom by sprockets 6 and 7of equal size and sprocket chain 8. A plurality of blades are carried bythe chain. These each consist of a pair of plates 9 connected to pivotpins or hinges Specification of Letters Patent.

Application filed May 2, 1908.

Patented Nov. 23,1909.

Serial No. 430,433.

10 at their outer ends, which are adapted to closely approach or sweepthe casing 3. The plates have divergent curved shanks 11 each of whichispivoted or otherwise properly fastened to the chain, preferably by ahinge or pivot pin 12 engaging adjacent pairs of plates. The shanks areso disposed as to clear the sprocket chain while passing around thewheels at each end of the casing, preferably hugging it closely andlying concentric with the wheel, while the end wall 13 of the casing isconcentric with the curve traced by the outer ends .of the blades asthey swing around the wheel. A pair of intake ports 14, indicated bythedotted lines in Fig. 3, are formed in one end plate of the casing indiametrically opposite positions at the point when the swinging in ofthe forward pivot of the blade fromthe straight section of the chainaccelerates the motion of the blade body. A pair of'oppositely disposedexhaust ports 15 are formed in the other end plate of the casing at thepoint where each blade has entered the tangent after sweeping round thewheel and is therefore moving much slower than the following blade.

In operation, each blade, as, it passes over an intake port, sweepsaround the wheel at faster speed than the following blade which acts asan abutment, thus drawing the air in rapidly. At the same time, therevolving blade is approaching the preceding blade which has slackenedits speed as it is passing over the exhaust port. This compresses theair in the space ahead of the revolving blade and forces it out of theexhaust port under greater velocity than that of the blades. The sameaction occurs at each end of the casing and is independent of thedirection of rotation of the blades. The discharge is positive, therebeing but little loss from slippage as in the use of the oblique orpropeller form of blade, and high velocity of the air is obtained withlow shaft or blade velocity of the driving mechanism.

Where compression and high speed are not necessary the ports may be sodisposed as to be uncovered sufficiently to permit the use of themachine as a pump for liquids, the action being positive andreciprocable motion being avoided.

The blades may be hinged together and act as their own chain; othermodifications may be made in the construction without each blade as itsweeps the intake port and departing from the spirit of the invention,and I do not limit myself to any particular form or arrangement ofparts.

What I claim as my invention is l. The combination with a housing havinginlet and outlet ports, of a series of revoluble blades arranged withinsaid housing to form a plurality of pockets successively communicatingwith said inlet and outlet ports, and means for rotating said bladesdifferentially to expand and contract said pockets when respectively incommunication with said inlet and outlet ports.

2. The combination with a casing having an intake and an exhaust port,blades therein articulated at their bases in an endless chain andadapted to form a series of pockets, and means for revolving the chainin the casing adapted to accelerate the motion of to retard it as itpasses the exhaust port, whereby the chamber formed between each pair ofblades is expanded as it is in communication with the intake port andcon tracted as it is in communication with the exhaust port.

3. The combination with a casing, a sprocket near each end thereof and aseries of blades articulated in an endless chain whose links formed bythe blade bases engage the sprockets, said casing having an intake portswept by each blade at the moment of its acceleration due to its angularvelocity as it runson to a sprocket, and an exhaust port swept by eachblade at the moment of its retardation due to its change from angular torectilinear motion as it leaves the sprocket.

at. The combination with a casing, of a pair of spaced revoluble memberstherein, an endless carrier surrounding and traversing said revolublemembers, a series of blades mounted upon said carrier, each bladecomprising a pair of plates hinged together l at their outer ends andprovided with di- I vergent shanks at their inner ends, the latter beingadapted to span said revoluble members as the blade passes therear'oundand being pivotally connected to said carrier.

5. The combination with a casing, of a pair of spaced revoluble memberstherein, an endless carrier surrounding and traversing said revolublemembers, and a series of blades mounted upon said carrier each bladecomprising a pair of plates hinged together at their outer ends andhaving divergent shanks at their inner ends adapted to span saidrevoluble members as the blades pass therearound, the shanks of adjacentblades being pivotally connected to each other and to the carrier.

6. The combination with a casing, of a drive shaft journaled in thecasing, a follower shaft parallel thereto, alined sprockets on the shaftand an endless series of articulated blades, each parallel to the shaftstraversing the sprockets, each blade having a forked inner end adaptedto span a sprocket as it passes around it, and the casing having anintake port adjacent the point where the blades run on the sprockets andan exhaust port adjacent the point where they leave the sprockets.

7. The combination with a casing, of a drive shaft journaled in thecasing, a follower shaft parallel thereto, alined sprockets on the shaftand an endless series of articulated blades, each parallel to theshafts, traversing the sprockets, each blade consisting of a pair ofplates pivoted together at their outer ends with their inner portionsbent into divergent curved shanks adapted to span a sprocket when theblade passes around it and the casing having an intake port adjacent thepoint where the blades run on the sprockets and an exhaust port adjacentthe point where they leave the sprockets.

In testimony whereof I aflix my signature in presence of two witnesses.

FRANK J. MINER.

Witnesses:

C. R. STICKNEY, OTTO F. BARTHEL.

